Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Test for frost resistance; German version EN 539-2:2013— 17 стр.
Clay roofing tiles for discontinuous laying - Determination of physical characteristics - Part 2: Test for frost resistance; German version EN 539-2:2006, Corrigendum to DIN EN 539-2:2006; German version EN 539-2:2006/AC:2008— 2 стр.
